Date: 2013-08-20

Bearing maintenance steps should pay attention to what matters

The operation should be maintained regularly check seals seal unobstructed lubricants Road, timely replacement of damaged seals. But also health monitoring, from noise. Lubricant, temperature monitoring. Normal operation should be smooth hum, abnormal timely processing the normal lubricant is clear and clean, if the lubricant is dirty, it will wear particles or contaminants, temperature, pressure, running will appear abnormal.
1, shaft and bearing chamber tolerances choice and control
Bearing pressed into the bearing rotating flexible block sense. If any signs of rotation is not flexible, indicates that the size of the shaft is too much tolerance to be reduced. Bearing pressed into the shaft turned by hand there is obviously a sense of "imperfections", it may be too much tolerance of the shaft or shaft roundness bad. Therefore, the control shaft and the bearing chamber tolerances should control roundness, many domestic manufacturers tolerance control control, no roundness.
2, bearing assembly
Because the bearings are high-precision products, such as improper assembly bearing channel easily damage, leading to bearing damage. The bearing assembly should have a dedicated mold can not beat, only a small circle force pressed into the shaft, the pressure of the big circle can only large circle force. Assembly requires the use of pneumatic or hydraulic press-fit upper and lower die outside the state level, tilt, if any, the bearing channel will result in damage due to power, the bearings produce a guide ring.
3, the assembly of foreign bodies to prevent
Bearings mounted on the rotor to be balanced, it is easy to produce the iron filings in the dynamic balance when entering inside the bearing, so it is best mounted bearings do balancing. Some manufacturers in order to facilitate assembly, the bearing indoor assembly coated with oil or grease for lubrication effect, but often operating staff is difficult to control the amount of, oil or grease in the bearings indoor accumulates more in the rotation of the bearing. easy to enter the interior of the bearing along the shaft. Bearing chamber is preferably not coated with oil or grease, such as non-coated not have to control may not bearing indoor accumulates.

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